Added AboutUI page for connection-help.

Added an AboutUI page for chrome://connection-help, that displays a
subset of the information available at
support.google.com/chrome/answer/6098869. On a separate CL, logic
will be added to redirect users who visit the online help center and
get an interstitial to the chrome://connection-help site.

Bug: 811382

Change-Id: Ic53d81a902fd8f59894f935a691b90c6eec98c11
Reviewed-on: https://chromium-review.googlesource.com/854793
Commit-Queue: Carlos IL <[email protected]>
Reviewed-by: Tommy Li <[email protected]>
Reviewed-by: Emily Stark <[email protected]>
Cr-Commit-Position: refs/heads/master@{#537119}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 3acca5ec..f7b3af2 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -93,6 +93,12 @@
 const char kBrowserTaskSchedulerDescription[] =
     "Enables redirection of some task posting APIs to the task scheduler.";
 
+const char kBundledConnectionHelpName[] = "Bundled Connection Help";
+const char kBundledConnectionHelpDescription[] =
+    "Enables or disables redirecting users who get an interstitial when "
+    "accessing https://support.google.com/chrome/answer/6098869 to local "
+    "connection help content.";
+
 const char kBypassAppBannerEngagementChecksName[] =
     "Bypass user engagement checks";
 const char kBypassAppBannerEngagementChecksDescription[] =